1331541401445 has 12 divisors (see below), whose sum is σ = 2308005095916. Its totient is φ = 710155414080.

The previous prime is 1331541401401. The next prime is 1331541401461. The reversal of 1331541401445 is 5441041451331.

1331541401445 is a `hidden beast` number, since 1 + 3 + 31 + 541 + 40 + 1 + 4 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 523327815396 + 808213586049 = 723414^2 + 899007^2 .

It is not a de Polignac number, because 1331541401445 - 2⁹ = 1331541400933 is a prime.

It is a super-2 number, since 2×1331541401445² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14794904416 + ... + 14794904505.

It is an arithmetic number, because the mean of its divisors is an integer number (192333757993).

Almost surely, 2^{1331541401445} is an apocalyptic number.

1331541401445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1331541401445 is a deficient number, since it is larger than the sum of its proper divisors (976463694471).

1331541401445 is a wasteful number, since it uses less digits than its factorization.

1331541401445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29589808932 (or 29589808929 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 1331541401445 its reverse (5441041451331), we get a palindrome (6772582852776).

The spelling of 1331541401445 in words is "one trillion, three hundred thirty-one billion, five hundred forty-one million, four hundred one thousand, four hundred forty-five".